$100 laptop powered by pedalling

The One Laptop Per Child project aims to provide cheap laptops to children in the developing world. The new power supply prototype, designed by a company called Paiwastoon, includes a pedestal which children as young as nine can sit at.

The designers say: "By taking the Freeplay hand crank and connecting it to the feet which can more easily provide power, it should make it much easier to deploy the laptop to countryside/rural areas. Because the laptop charges as you use it, no additional battery is needed."